reorder list of vectors by norm
Question
I have array A containing a list of nvec 3D-vectors, A.shape==(nvec,3) . I want to reorder rows of A according to the vectors' norms:
norm=numpy.square(A).sum(axis=1)
rank=numpy.argsort(norm)
I tried A[rank,:] but it gives me an error.
1 answers
solution1
1 ACCPTED 2013-02-11 21:20:05
只需删除第二个下标：
A[rank]
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